High-temperature gas generation on-line detection device

Abstract

The utility model relates to the technical field of gas generation detection, and provides a high-temperature gas generation online detection device which comprises a gas source, a material reactor, a gas detection device, a communicating pipeline, a filter and a heating pipe, the communicating pipeline comprises a first pipeline and a second pipeline; two ends of the first pipeline are respectively communicated with the gas source and one of the openings; the filter is arranged in the second pipeline in a communicating mode, the filter and the second pipeline are both arranged in the heating pipe, and the heating temperature of the heating pipe is larger than 100 DEG C. By arranging the heating pipe, the temperature in the second pipeline can be increased to 100-300 DEG C, water vapor and soluble salt are prevented from being crystallized in the pipeline when being cooled, and by arranging the solid filter, escaping solid substances in the second pipeline can be blocked in the filter, so that the second pipeline and the gas detection device are prevented from being blocked, and the detection efficiency is improved. And the normal operation of the gas generation online detection device is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of gas generation detection, in particular to an online detection device for high-temperature gas generation. Background Art

[0002] The gas generation detection device is a chemical instrument that can both prepare the required gas and detect the prepared gas. It is widely used in fields such as chemical research.

[0003] Patent publication number CN111426623B discloses a device for simulating a high-temperature biomass corrosion environment and detecting experimental reaction gases in real time. In the device, an oxygen cylinder and a nitrogen cylinder are respectively connected to two flow meters, and the two flow meters are respectively connected to the two ports of a T-shaped tee. The third port of the T-shaped tee is connected to a first gas washing bottle, which is placed in a water bath. The first gas washing bottle is also provided with a first gas outlet conduit, which is connected to the first end of a quartz tube. The second end of the quartz tube is connected to the second gas washing bottle through a tee conduit. The third end of the tee conduit is connected to a gas detection system. The second gas washing bottle is also provided with a second gas outlet conduit, through which the experimental gas generated in the quartz tube is discharged. The device is simple to operate, has a wide range of settable experimental temperatures, can accurately control the flow rate of the mixed gas, and can accurately control the water vapor humidity. Among them, the gas detection system can determine the specific progress of the biomass high-temperature corrosion by measuring the concentration of the target gas in the gas generated after the biomass high-temperature corrosion reaction.

[0004] In the above technical solution, in order to achieve gas preparation and online detection, a quartz tube and a gas detection system are set up, as well as a water bath and a tubular furnace to provide heat. However, when soluble inorganic salts and water are present in the material in the quartz tube, the water will form a gas-liquid mixed phase mist when heated. The soluble salt will dissolve in this mist and mix with the prepared gas to flow. During its flow, the salt substances will crystallize when cooled, which can easily block subsequent transmission pipelines or detection equipment, affecting the normal operation of the device. Utility Model Content

[0005] In view of this, the present invention proposes an online detection device for high-temperature gas generation, which can prevent soluble salts from clogging the connecting pipeline and the gas detection device, thereby ensuring the normal operation of the gas generation detection device.

[0006] The technical solution of the present invention is achieved as follows: The present invention provides an online detection device for high-temperature gas generation, including a gas source, a material reactor, a gas detection device, a connecting pipeline, a filter and a heating pipe, wherein:

[0007] The material reactor is provided with two openings, the interior of which is used to place the reaction materials;

[0008] The connecting pipeline includes a first pipeline and a second pipeline. Two ends of the first pipeline are respectively and hermetically connected to the gas source and one of the openings, and two ends of the second pipeline are respectively and hermetically connected to the gas detection device and the other opening.

[0009] The filter is connected and arranged in the second pipeline, and both the filter and the second pipeline are arranged in the heating pipe, and the heating temperature of the heating pipe is greater than 100 degrees Celsius.

[0010] Based on the above technical solutions, preferably, the material reactor includes a constant temperature box, a quartz tube, and two metal flange covers. Among them,

[0011] The quartz tube is fixedly arranged in the constant temperature box, and both ends of the quartz tube penetrate through the constant temperature box. The quartz tube is of a straight tube structure and is arranged in a horizontal direction, and the two openings are respectively arranged at both ends of the quartz tube.

[0012] The two metal flange covers are respectively and hermetically fixed in the two openings, and the end parts of the first pipeline and the second pipeline respectively penetrate through and are hermetically fixed in the two metal flange covers.

[0013] Further preferably, the material reactor further includes a fixing frame, a heat insulation cotton, and a heater. Among them,

[0014] The fixing frame is fixedly arranged on one of the metal flange covers.

[0015] The heat insulation cotton is fixedly arranged on the fixing frame and is located at one end of the quartz tube close to the gas detection device.

[0016] The heater is fixedly arranged in the heat insulation cotton and is located outside one end of the second pipeline far from the gas detection device.

[0017] Further preferably, the fixing frame includes a plurality of fixing elastic pieces and a supporting piece. Among them,

[0018] One end of the fixing elastic piece is fixedly arranged on the metal flange cover connected to the second pipeline and is located on one side close to the other metal flange cover, and the plurality of fixing elastic pieces are arranged in a circumferential array around the center line of the quartz tube.

[0019] The supporting piece is fixedly arranged at one end of the fixing elastic piece far from the metal flange cover. The heat insulation cotton is arranged between the plurality of fixing elastic pieces, and both ends of the heat insulation cotton are respectively abutted against the metal flange cover and the supporting piece.

[0020] More preferably, the fixing bracket further includes a hook piece, which is fixedly arranged on the abutting piece and embedded in the heat-insulating cotton.

[0021] More preferably, the outer diameter of the hook piece gradually decreases from the end close to the abutting piece to the end far from the abutting piece.

[0022] More preferably, the heater is of a spiral tubular structure, and both ends thereof penetrate through the metal flange cover connected to the second pipe, and the middle position is located inside the quartz tube and outside the end of the second pipe far from the gas detection device.

[0023] More preferably, two card slots are formed in the heat-insulating cotton, and the end of the second pipe far from the gas detection device and the middle position of the heater are respectively arranged in the two card slots.

[0024] On the basis of the above technical solutions, preferably, the gas source includes a carrier gas source and a dilution gas source, and the communication pipeline further includes a third pipe and a three-way pipe, wherein,

[0025] The carrier gas source is communicated with the material reactor through the first pipe;

[0026] The three-way pipe is communicatively arranged in the second pipe;

[0027] The dilution gas source, the third pipe and the three-way pipe are hermetically communicated in sequence, and a heating pipe is arranged outside the end of the third pipe close to the three-way pipe.

[0028] More preferably, a flow meter is further included, and the flow meter is communicatively arranged in the first pipe and the third pipe respectively.

[0029] The high-temperature gas generation on-line detection device of the present utility model has the following beneficial effects compared with the prior art:

[0030] (1) By arranging the heating pipe, the temperature in the second pipe can be raised to 100-300 degrees Celsius, avoiding the condensation of water vapor and soluble salts in the pipe due to cold, and by arranging the solid filter, the escaped solid substances in the second pipe can be blocked in the filter, thus avoiding the blockage of the second pipe and the gas detection device and ensuring the normal operation of the gas generation on-line detection device;

[0031] (2) By allowing both ends of the quartz tube to penetrate through the constant temperature box, it is convenient to take and place the reaction materials. By arranging the heat-insulating cotton and the heater in the low-temperature area of the constant temperature box, the condensation of water vapor into a liquid phase is avoided, so that the volatile inorganic salt solid substances are dissolved therein, resulting in pipe blockage, and the anti-blocking effect of the gas generation detection device is improved;

[0032] (3) By setting up a fixing frame and making the fixing frame include fixing elastic pieces, abutting pieces and hook pieces, the fixing firmness and the disassembly and assembly convenience of the heat insulation cotton can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a schematic structural diagram of an on-line detection device for generating high-temperature gas of the present invention;

[0035] Figure 2 It is a schematic structural diagram of an on-line detection device for generating high-temperature gas of the present invention when a third pipeline is provided;

[0036] Figure 3 It is a perspective view of the fixing frame and the heat insulation cotton in an on-line detection device for generating high-temperature gas of the present invention;

[0037] Figure 4 It is a perspective view of the heater in an on-line detection device for generating high-temperature gas of the present invention;

[0038] Figure 5 It is a perspective view of the heat insulation cotton in an on-line detection device for generating high-temperature gas of the present invention;

[0039] Figure 6 It is a perspective view of the abutting piece in an on-line detection device for generating high-temperature gas of the present invention.

[0040] Wherein: 1, gas source; 11, carrier gas source; 12, dilution gas source; 2, material reactor; 21, constant temperature box; 22, quartz tube; 23, metal flange cover; 24, fixing frame; 241, fixing elastic piece; 242, abutting piece; 243, hook piece; 25, heat insulation cotton; 26, heater; 201, opening; 202, card slot; 3, gas detection device; 4, communication pipeline; 41, first pipeline; 42, second pipeline; 43, third pipeline; 44, three-way pipe; 5, filter; 6, heating pipe; 7, flowmeter. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0041] The following will be combined with the specific embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] like Figure 1-6 As shown, an online detection device for high-temperature gas generation of the present invention includes a gas source 1, a material reactor 2, a gas detection device 3, a connecting pipe 4, a filter 5, a heating pipe 6 and a flow meter 7.

[0043] Among them, the gas source 1 mainly provides carrier gas for the gas generation detection device to drive the gas generated in the material reactor 2 to flow into the gas detection device 3 for detection. The gas source 1 provides the gas required for the reaction, such as nitrogen, oxygen, ammonia, etc., but does not react with the gas generated by the material reactor 2.

[0044] The material reactor 2 is used to provide a reaction environment for the chemical changes required to prepare and generate the gas. The material reactor 2 is provided with two openings 201, which are used to place the reaction materials. The carrier gas enters the material reactor 2 through one opening 201 and reacts chemically with the material to produce a gas that flows through the other opening 201 to the next step.

[0045] The gas detection device 3 is used to detect the type and concentration of the generated gas online, and includes any instrument capable of detecting gas, such as a mass spectrometer and an FTIR gas analyzer.

[0046] The connecting pipe 4 is used to conduct other components. The connecting pipe 4 includes a first pipe 41 and a second pipe 42. The two ends of the first pipe 41 are respectively sealed and connected to the gas source 1 and one of the openings 201. The two ends of the second pipe 42 are respectively sealed and connected to the gas detection device 3 and the other opening 201. Figure 1 As shown, the carrier gas flows from the gas source 1 through the first pipe 41 into the material reactor 2, and then drives the gas prepared inside to flow through the second pipe 42 to the gas detection device 3 for detection.

[0047] The filter 5 is used to filter the solid impurities in the second pipe 42. The filter 5 is connected and arranged in the second pipe 42. It is an existing technology and uses corrosion-resistant and high-temperature resistant material filter membranes, filter nets, etc. such as foamed alumina to block solid impurities.

[0048] The heating pipe 6 is used to heat the second pipeline 42 and the filter 5. The filter 5 and the second pipeline 42 are both arranged inside the heating pipe 6, and the heating temperature of the heating pipe 6 is greater than 100 degrees Celsius, and the further heating temperature is 100 - 300 degrees Celsius. When there are water and soluble salts in the material reactor 2, the water is heated to form a gas-liquid fog, and the soluble salts will dissolve in this fog and mix with the gas prepared by the material reactor 2 to form a mixed flow, which enters the second pipeline 42. By using the heating pipe 6 to heat the second pipeline 42 to 100 - 300 degrees Celsius, it is avoided that the water vapor and soluble salts crystallize due to cooling in the pipeline. At the same time, the escaped solid substances entering the second pipeline 42 can be blocked by the filter 5, avoiding clogging the subsequent second pipeline 42 or the gas detection device 3. During the use of this gas generation detection device, only the filter 5 needs to be replaced and maintained regularly, thus ensuring the normal operation of this gas generation detection device.

[0049] The heating pipe 6 is a prior art. It can heat the second pipeline 42 by embedding a resistance heating wire in a sleeve. To ensure the heating effect of the heating pipe 6 on the second pipeline 42, it is preferred that one end of the heating pipe 6 close to the material reactor 2 is L-shaped, avoiding a gap between the heating pipe 6 and the material reactor 2.

[0050] As Figure 1 As shown, the material reactor 2 includes a constant temperature box 21, a quartz tube 22, two metal flange covers 23, a fixing frame 24, a heat insulating cotton 25, and a heater 26. Among them, the constant temperature box 21 is used to provide a reaction temperature for the materials in the quartz tube 22. The quartz tube 22 is fixedly arranged inside the constant temperature box 21, and both ends of it penetrate through the constant temperature box 21, so as to facilitate the taking and placing of the materials in the quartz tube 22 without separating the quartz tube 22 from the constant temperature box 21. The quartz tube 22 has a straight tubular structure and is arranged horizontally. Two openings 201 are respectively arranged at both ends of the quartz tube 22 to enable the carrier gas to better drive the generated gas to flow and improve the gas flow efficiency. Two metal flange covers 23 are respectively sealed and fixed in the two openings 201, and the ends of the first pipeline 41 and the second pipeline 42 respectively penetrate and are sealed and fixed in the two metal flange covers 23, using the two metal flange covers 23 to achieve the sealing and fixing of the first pipeline 41 and the second pipeline 42.

[0051] As Figure 3As shown in the figure, the fixing frame 24 is fixedly arranged on one of the metal flange covers 23; the heat-insulating cotton 25 is fixedly arranged on the fixing frame 24 and is located at one end of the quartz tube 22 close to the gas detection device 3. Preferably, the fixing frame 24 is fixedly arranged on the metal flange cover 23 connected to the second pipeline 42; the heater 26 is fixedly arranged inside the heat-insulating cotton 25 and is located outside one end of the second pipeline 42 far from the gas detection device 3. The heater 26 and the heat-insulating cotton 25 are used to heat up and keep warm one end of the quartz tube 22 extending out of the constant temperature box 21 and one end of the second pipeline 42 located inside the quartz tube 22, so as to preheat the mixed flow inside the quartz tube 22 and improve the heating efficiency of the mixed flow and the anti-blocking performance of this gas generation detection device; of course, the heating temperature of the heater 26 must be above 100 degrees Celsius to prevent water vapor condensation.

[0052] As Figure 6 shown in the figure, the fixing frame 24 includes a plurality of fixing elastic pieces 241, a holding piece 242 and a hook piece 243. Among them, one end of the fixing elastic piece 241 is fixedly arranged on the metal flange cover 23 connected to the second pipeline 42 and is located on one side close to the other metal flange cover 23. The plurality of fixing elastic pieces 241 are arranged in a circumferential array around the central axis of the quartz tube 22. The heat-insulating cotton 25 is arranged between the plurality of fixing elastic pieces 241, so as to prevent the heat-insulating cotton 25 from moving radially along the quartz tube 22; the holding piece 242 is fixedly arranged at one end of the fixing elastic piece 241 far from the metal flange cover 23, and both ends of the heat-insulating cotton 25 are respectively in contact with the metal flange cover 23 and the holding piece 242, so as to prevent the heat-insulating cotton 25 from moving axially along the quartz tube 22, thereby improving the fixing firmness of the heat-insulating cotton 25.

[0053] The fixing elastic piece 241 is preferably made of an elastic material so as to be toggled to realize the disassembly and assembly of the heat-insulating cotton 25; however, when the fixing elastic piece 241 is made of an elastic material, the problem that the holding piece 242 is separated from the heat-insulating cotton 25 is likely to occur. The hook piece 243 is fixedly arranged on the holding piece 242 and is embedded in the heat-insulating cotton 25, so as to firmly fix the hook piece 243 and the holding piece 242 on the heat-insulating cotton 25 and ensure the fixing firmness of the heat-insulating cotton 25; specifically, the outer diameter of the hook piece 243 gradually decreases from one end close to the holding piece 242 to one end far from the holding piece 242, so that the hook piece 243 is more suitable for inserting into the heat-insulating cotton 25.

[0054] The heat-insulating cotton 25 is a prior art. It has flexibility, so it can be disassembled and assembled conveniently. And it is provided with a plurality of fine holes inside, having good air permeability. Therefore, one end of the second pipeline 42 far from the gas detection device 3 can extend into the heat-insulating cotton 25, and the heat-insulating cotton 25 can also play a certain filtering role.

[0055] As Figure 3 and Figure 4As shown, when only the thermal insulation cotton is provided, condensation will also occur to water vapor in the low-temperature area of the constant temperature box. Therefore, a heater 26 is added to ensure that the temperature in the low-temperature area is higher than 100 degrees Celsius. The heater 26 is of a spiral tubular structure, and both ends thereof penetrate through a metal flange cover 23 connected to the second pipe 42. The middle position thereof is located inside the quartz tube 22 and outside the second pipe 42 at the end away from the gas detection device 3. Both ends of the heater 26 are communicated with a medium circulation device with a higher temperature, and the heat in the circulating medium is used to heat the second pipe 42.

[0056] As Figure 5 shown, two clamping grooves 202 are formed on the thermal insulation cotton 25, and one end of the second pipe 42 away from the gas detection device 3 and the middle position of the heater 26 are respectively arranged in the two clamping grooves 202, so that the thermal insulation cotton 25 can be better assembled with the second pipe 42 and the heater 26.

[0057] As Figure 2 shown, the gas source 1 includes a carrier gas source 11 and a dilution gas source 12, and the connecting pipeline 4 further includes a third pipe 43 and a three-way pipe 44. Among them, the carrier gas source 11 is communicated with the material reactor 2 through a first pipe 41; the three-way pipe 44 is communicated and arranged inside the second pipe 42. The three-way pipe 44 has three joints, and two of the joints are hermetically communicated with the second pipe 42; the dilution gas source 12 is communicated with the second pipe 42 through the third pipe 43 and the third joint of the three-way pipe 44, that is, the dilution gas source 12, the third pipe 43 and the three-way pipe 44 are hermetically communicated in sequence; the flowing carrier gas generated by the carrier gas source 11 drives the gas generated in the material reactor 2 to flow into the gas detection device 3 for detection. At the same time, the flowing dilution gas generated by the dilution gas source 12 mixes and dilutes the gas generated in the material reactor 2, so as to reduce its concentration for detection; in order to prevent the dilution gas from reducing the overall temperature of the mixed gas, a heating pipe 6 is arranged outside one end of the third pipe 43 close to the three-way pipe 44; of course, in order to enrich the functions of the device, as shown in the figure, a tail gas emission device etc. are added, and a multi-way connector such as a four-way pipe can also be used to replace the three-way pipe 44.

[0058] The flowmeter 7 is used to measure the gas flow rate in the connecting pipeline 4. The flowmeter 7 is respectively communicated and arranged in the first pipe 41 and the third pipe 43, and the speed of the gas source 1 is adjusted according to the magnitude of the gas flow rate displayed by the flowmeter 7.

[0059] The working principle of an on-line detection device for generating high-temperature gas of the present utility model is as follows:

[0060] As Figure 2As shown, the material undergoes a chemical reaction in the quartz tube 22 to generate the required gas. The carrier gas generated by the carrier gas source 11 flows through the quartz tube 22, driving the gas generated in the quartz tube 22 to flow into the gas detection device 3 for detection. At the same time, the dilution gas generated in the dilution gas source 12 also flows into the second pipeline 42 to be mixed and diluted with the above-mentioned gas, thereby regulating the concentration of the gas generated in the quartz tube 22 for detection. During this period, the heater 26 is used to heat the opening 201 near the gas detection device 3 to make the temperature in the low-temperature area of the constant temperature box higher than 100 degrees Celsius, preventing water vapor and soluble salts from crystallizing due to cold in the pipeline and blocking the subsequent pipeline or the gas detection device 3. The heating tube 6 is used to heat the second pipeline 42 to raise the temperature in the second pipeline to 100 - 300 degrees Celsius, preventing water vapor and soluble salts from crystallizing due to cold in the pipeline and blocking the subsequent pipeline or the gas detection device 3.

[0061] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An on-line detection device for generating high-temperature gas, characterized in that: It includes a gas source (1), a material reactor (2), a gas detection device (3), a connecting pipeline (4), a filter (5), and a heating pipe (6). Among them, Two openings (201) are provided on the material reactor (2), and the inside is used to place reaction materials; The connecting pipeline (4) includes a first pipeline (41) and a second pipeline (42). The two ends of the first pipeline (41) are respectively and hermetically connected to the gas source (1) and one of the openings (201), and the two ends of the second pipeline (42) are respectively and hermetically connected to the gas detection device (3) and the other opening (201); The filter (5) is connected and arranged in the second pipeline (42), and both it and the second pipeline (42) are arranged in the heating pipe (6), and the heating temperature of the heating pipe (6) is greater than 100 degrees Celsius.

2. The on-line detection device for generating high-temperature gas according to claim 1, characterized in that: The material reactor (2) includes a constant temperature box (21), a quartz tube (22), and two metal flange covers (23). Among them, The quartz tube (22) is fixedly arranged in the constant temperature box (21), and both ends thereof penetrate through the constant temperature box (21). The quartz tube (22) is of a straight tubular structure and is arranged in the horizontal direction. The two openings (201) are respectively arranged at both ends of the quartz tube (22); The two metal flange covers (23) are respectively and hermetically fixed in the two openings (201), and the ends of the first pipeline (41) and the second pipeline (42) respectively penetrate through and are hermetically fixed in the two metal flange covers (23).

3. The on-line detection device for generating high-temperature gas according to claim 2, characterized in that: The material reactor (2) further includes a fixing frame (24), a heat insulation cotton (25), and a heater (26). Among them, The fixing frame (24) is fixedly arranged on one of the metal flange covers (23); The heat insulation cotton (25) is fixedly arranged on the fixing frame (24) and is located at one end of the quartz tube (22) close to the gas detection device (3); The heater (26) is fixedly arranged in the heat insulation cotton (25) and is located outside the end of the second pipeline (42) far from the gas detection device (3).

4. The on-line detection device for generating high-temperature gas according to claim 3, characterized in that: The fixing frame (24) includes a plurality of fixing elastic pieces (241) and a supporting piece (242). Among them, One end of the fixing elastic piece (241) is fixedly arranged on the metal flange cover (23) connected to the second pipeline (42) and is located on the side close to the other metal flange cover (23). The plurality of fixing elastic pieces (241) are arranged in a circumferential array around the central axis of the quartz tube (22); The supporting piece (242) is fixedly arranged at the end of the fixing elastic piece (241) far from the metal flange cover (23). The heat insulation cotton (25) is arranged between the plurality of fixing elastic pieces (241), and both ends thereof are respectively in abutment with the metal flange cover (23) and the supporting piece (242).

5. The on-line detection device for generating high-temperature gas according to claim 4, wherein: The fixing frame (24) further includes a hook piece (243). The hook piece (243) is fixedly arranged on the supporting piece (242) and is embedded in the heat insulation cotton (25).

6. The on-line detection device for generating high-temperature gas according to claim 5, characterized in that: The outer diameter of the hook piece (243) gradually decreases from the end close to the abutting piece (242) to the end far from the abutting piece (242).

7. The on-line detection device for generating high-temperature gas according to claim 3, characterized in that: The heater (26) is of a spiral tubular structure, and both ends thereof penetrate through the metal flange cover (23) connected to the second pipe (42). The middle position is located inside the quartz tube (22) and outside one end of the second pipe (42) far from the gas detection device (3).

8. The on-line detection device for generating high-temperature gas according to claim 3, characterized in that: Two clamping grooves (202) are formed in the heat insulation cotton (25), and one end of the second pipe (42) far from the gas detection device (3) and the middle position of the heater (26) are respectively arranged in the two clamping grooves (202).

9. The on-line detection device for generating high-temperature gas according to claim 1, characterized in that: The gas source (1) includes a carrier gas source (11) and a dilution gas source (12), and the communication pipeline (4) further includes a third pipe (43) and a three-way pipe (44). Among them, The carrier gas source (11) is communicated with the material reactor (2) through the first pipe (41); The three-way pipe (44) is communicatively arranged in the second pipe (42); The dilution gas source (12), the third pipe (43) and the three-way pipe (44) are hermetically communicated in sequence, and the heating pipe (6) is arranged outside one end of the third pipe (43) close to the three-way pipe (44).

10. An on-line detection device for generating high-temperature gas according to claim 9, characterized in that: A flowmeter (7) is further included, and the flowmeter (7) is communicatively arranged in the first pipe (41) and the third pipe (43) respectively.

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